Sigwobs to themselves



A. R. a; R. RORR. y'

SRWRR TRAP. y

Patented Nov. 8,1881.

(No Model.)

'ff H N 3A |11@ I w n %MU IMF T., W n mM/1 y |||1 R www u n l. .f .M A W w f f f// /H/ H 1n Ju u UNITED STATES PATENT OFFICE.

`MGALLEY, ALL OF SAME PLAGE.

JAN-E E. ROBE, AND JAMES SEWER-TRAP.

SPECIFICATION forming part of Letters Patent No. 249,260, dated'Novemloer 8, 1881. Application filed uly 30, 1881. (No model.)

To all 'whom it may concern:

, Be it known that we, ALEXANDER R. ROBE and RALPH ROBB, of Brooklyn, in the county ot'Kings and Stateof New York, have invented 5 certain Improvem entsin SewerTraps, of which the following is a specification.

This invention relates to certain improve` ments in sewer-traps; and it consists in the manner in which the several inlet-pipes are ario ranged'and the employment of'a cisternor basin between the inlet-pipes from the various sinks or traps and the main or lowest trap, all of which will be more fully hereinafter described, and. set forth in the claim.

In the drawing. which is a vertical section 4 through the middleof the trap, A represents a cistern or basin placed inside of an Ordinary trap, A', and which` works like a cataract Overilowinginto the lower portion, B, of the trap zo A', havingits outlet-pipe B'.

O is the pipe-inlet for rain-water leader C from the side of the house, which sideis repre sented by the vertical lines J. llhis rain-'water pipeO' is to be made tight at its joints, and as 25 it opens at the top of the wall near the eavestrough, it becomes a sure ventilator for the trap, while itaots as a complete iushing-pipe during rain-storms to carry off everything in the trap. It also serves to prevent any fend- 3o ency in the cistern or basin A to siphonage.

D is an inlet-pipe from the bath-room, washbasins, wash-tubs, kitchen-sinks, 85e., giving a greater depth of water-seal than can be had when the ss Pipes.

pipes pass through the waterseloset E and F are different water-closet inlets. One only may be nsed,.acoording to the manner in which it may be requisite to enter them into the eistern to suit the plumbing in the house, as some traps may be constructed one way or the other.

G is the man-hole l'or cleaning the trap.

His a vault, to be built when the trap islaid under ground outside of a building, having a man-hole, I, to give easy access tothe trap.

J 'jis a lack-valve, designed to prevent water backing intothehouse. y

By this arrangement of a receiving cistern or basin., A,"insde the trap-pipe A', .and the rain-water pipe C' opening into the trap above the cesspool B, all the foul gases are carried off through the rain-water pipe to the top of the house. Theintervention of the cistern preven t's the sewer-gas from entering through any of the pipes back into the house.

When the trap is to be placed inside of a house, as is often necessary,-one inlet-pipe only will be lused to connect with cistern Av for water-closets, baths, wash-basins, &c.

" I claim- A sewer-trap consisting ot' an upper watersealing basin and check-valve, in combination with a lower water-seal having the rain-water pipe above the Water, substantially as and for the purpose described.

ALEXANDER RIDDELL RJOBB. RALPH ROBE. Witnesses:

PETER TROY, THOMAS BOLGER.

ROOKLYN, NEW YORK, As-- Vso 

